A screw pile pile head cutting device with an autonomous switching cutting state

Abstract

The present invention discloses a screw pile pile head cutting device with an autonomous cutting state switching function. The present invention relates to the technical field of screw pile pile heads, and includes a housing, and support rods fixedly connected to the corners of the upper surface of the housing; a positioning mechanism for positioning the device at the top of the screw pile pile head. By providing the positioning mechanism, the device can be connected to the screw pile pile head and can be automatically aligned with the center of the top of the screw pile pile head during operation. Furthermore, when performing circumferential cutting on the pile head, the device can achieve a perfect circular rotation on the outer surface of the pile head; a cutting mechanism for performing circumferential cutting on the screw pile pile head, and a clamping mechanism for clamping the device on the outer surface of the screw pile pile head and enabling the device to rotate stably on the outer surface of the pile head. A fixed box is fixedly connected to the inner wall of the housing, and the positioning mechanism is fixedly connected above the housing through the support rods, achieving the effect of cutting screw pile pile heads with different diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of screw pile pile heads, and specifically to a screw pile pile head cutting device with an automatic cutting state switching function. Background Art

[0002] The screw pile is a foundation treatment technology widely used in construction projects. The design and construction quality of its pile head directly affect the bearing capacity and stability of the entire pile foundation. The pile head of a screw pile generally refers to the part at the top of the pile body connected to the cap or foundation structure. Its function is to transfer the load of the upper structure to the pile body and ensure uniform distribution of the load. During the construction process, the treatment of the pile head is crucial. First, the pile head should be kept flat to ensure a tight fit with the contact surface of the cap, avoiding stress concentration caused by unevenness. Second, the concrete strength of the pile head must meet the design requirements, usually guaranteed through curing and inspection. In addition, the arrangement of the pile head steel bars also needs to comply with the specifications to ensure effective connection with the cap steel bars, enhancing the seismic resistance and tensile performance of the overall structure. After the construction is completed, the pile head is usually cut and cleaned to ensure that its surface is free of debris and loose concrete. For projects with special geological conditions or high bearing capacity requirements, the pile head may also need to be strengthened, such as adding wire mesh or using high-strength concrete.

[0003] During the cutting process of the screw pile pile head, when encountering a pile head with a large diameter and a small cutting disc diameter, due to the insufficient cutting disc diameter, it is impossible to cover the entire cross-section of the pile head at one time, resulting in the need for multiple cuts to complete the separation of the pile head. This not only prolongs the construction time but also increases the operation difficulty and labor cost. At the same time, multiple cuts are likely to cause uneven cuts, or even misalignment or deviation, affecting the connection quality between the pile head and the cap, and thus weakening the stability of the overall structure. Summary of the Invention

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A screw pile pile head cutting device with an automatic cutting state switching function, including a housing, and support rods fixedly connected to the corners of the upper surface of the housing;

[0005] A positioning mechanism for positioning the device at the top of the screw pile pile head. By setting the positioning mechanism, the device can be connected to the screw pile pile head and can be automatically aligned with the center of the top of the screw pile pile head during operation. Thus, when performing circumferential cutting on the pile head, the device can rotate in a perfect circle on the outer surface of the pile head;

[0006] Cutting mechanism, used for circumferential cutting of the screw pile head. By setting the cutting mechanism, when the diameter of the screw pile head is small, the screw pile head can be directly cut and severed. At the same time, when the diameter of the screw pile head is larger than the diameter of the cutting disc, circumferential cutting of the screw pile head can be achieved;

[0007] Clamping mechanism, used to clamp the device on the outer surface of the screw pile head and make the device rotate stably on the outer surface of the pile head. By setting the clamping mechanism, when circumferential cutting of the screw pile head is required, the outer surface of the screw pile head can be clamped, so as to increase the stability during cutting when the device rotates around the screw pile head;

[0008] A fixed box is fixedly connected to the inner wall of the housing. The positioning mechanism is fixedly connected above the housing through a support rod. The cutting mechanism is fixedly connected to the upper surface of the housing. The clamping mechanism is fixedly connected to the outer surface of the housing;

[0009] The clamping mechanism includes an extrusion mechanism, a stabilizing mechanism and a transmission mechanism.

[0010] Preferably, the positioning mechanism includes a connecting block. The connecting block is fixedly connected to the top of the support rod. A first rolling bearing is fixedly connected to the outer surface of the connecting block. An outer shell is fixedly connected to the inner ring of the first rolling bearing. A positioning frame is fixedly connected to the inner wall of the outer shell. A pull rod is fixedly connected to the upper surface of the positioning frame.

[0011] Preferably, a first limiting tube penetrates through the outer surface of the positioning frame. A piston rod is closely slidably arranged in the inner cavity of the first limiting tube. A clamping plate is fixedly connected to one end of the piston rod located in the inner cavity of the positioning frame. A track groove is formed on the upper surface of the positioning frame. A moving rod is fixedly connected to the upper surface of the clamping plate. The moving rod is slidably connected to the track groove formed on the upper surface of the positioning frame.

[0012] Preferably, a sealing ring is slidably arranged in the inner cavity of the outer shell. The sealing ring is sleeved on the outer surface of the positioning frame. A limiting ring is fixedly connected to the lower surface of the sealing ring. A first rotating ring is rotatably connected to the inner cavity of the limiting ring. A bent rod is fixedly connected to the lower surface of the first rotating ring. A first internal thread ring is fixedly connected to one end of the bent rod away from the first rotating ring.

[0013] Preferably, the cutting mechanism includes a support plate fixedly connected to the upper surface of the housing. A track frame is fixedly connected to the top end of the support plate. A first stepping motor is slidably connected to the inner cavity of the track frame. Sliding blocks are symmetrically installed on the outer side surface of the first stepping motor and are slidably connected to the inner cavity of the track frame. A second internal thread ring penetrates through the outer surface of the track frame, and a first reciprocating lead screw is threadedly connected to the inner cavity of the second internal thread ring. One end of the first reciprocating lead screw close to the first stepping motor is fixedly connected to a rotating block, and a rotating sleeve is rotatably connected to the outer surface of the rotating block. The rotating sleeve is fixedly connected to the outer surface of the first stepping motor.

[0014] Preferably, a second stepping motor is fixedly connected to the upper surface of the track frame. The output end of the second stepping motor is installed with a second reciprocating lead screw through a coupling. The second reciprocating lead screw is threadedly connected to the first internal thread ring. A first roller is fixedly connected to the outer surface of the second reciprocating lead screw. The output end of the first stepping motor is installed with a second rotating rod through a coupling. A cutting blade is arranged at the bottom end of the second rotating rod. The cutting blade is located in the inner cavity of the fixed box. A second rolling bearing is fixedly connected to the outer surface of the second rotating rod. A first sliding rod is fixedly connected to the outer surface of the second rolling bearing. A limiting groove is sleeved on the outer surface of the first sliding rod. The limiting groove is fixedly connected to the inner surface of the fixed box.

[0015] Preferably, the extrusion mechanism includes a limiting frame fixedly connected to the outer surface of the housing. A rotating column is rotatably connected to the inner cavity of the limiting frame. A rotating frame is fixedly connected to the outer surface of the rotating column. A clamping plate is fixedly connected to the outer side surface of the rotating frame. Limiting balls are symmetrically and fixedly connected to the end of the rotating column. A rotating ring is rotatably connected to the outer surface of the limiting ball. A clamping frame is fixedly connected to the upper surface of the rotating ring. The outer surfaces of the clamping frame and the clamping plate are in extrusion fit. A support frame is fixedly connected to the side of the rotating frame away from the rotating column. A connecting frame is fixedly connected to the end of the support frame. A limiting ring is fixedly connected to the inner wall of the connecting frame.

[0016] Preferably, a cylinder is rotatably connected to the inner cavity of the limiting ring. A first extrusion plate is fixedly connected to the outer surface of the limiting ring. A second extrusion plate is fixedly connected to the outer surface of the cylinder. A first spring is fixedly connected to the outer side surface of the second extrusion plate, and the end of the first spring is fixedly connected to the first extrusion plate. A third rotating rod is fixedly connected to the bottom end of the cylinder. A support frame is fixedly connected to the outer surface of the third rotating rod. A protective frame is fixedly connected to the inner wall of the support frame. A circular ring is fixedly connected to the inner wall of the support frame. A spherical wheel is rotatably connected to the inner cavity of the circular ring.

[0017] Preferably, the stabilizing mechanism includes a connecting frame fixedly connected to the surface of the connecting frame. The end of the connecting frame is fixedly connected with a stabilizing box. The inner wall of the stabilizing box is fixedly connected with a second limiting tube. A second sliding rod is slidably connected to the inner cavity of the second limiting tube. The end of the second sliding rod is fixedly connected with a second spring. One end of the second sliding rod located on the outer surface of the second limiting tube is fixedly connected with a limiting column. A second rotating ring is rotatably connected to the outer surface of the limiting column. A connecting rod is fixedly connected to the outer surface of the second rotating ring. The end of the connecting rod is fixedly connected with an extrusion cylinder.

[0018] Preferably, the transmission mechanism includes a third limiting tube fixedly connected to the upper surface of the stabilizing box. A third sliding rod is slidably connected to the inner cavity of the third limiting tube. The end of the third sliding rod is fixedly connected with a third spring. A fixing plate is fixedly connected to the upper surface of the third sliding rod. A limiting rod is fixedly connected to the end of the fixing plate. A second roller is rotatably connected to the outer surface of the limiting rod. A handle is fixedly connected to the top of the limiting rod. The second roller is connected to the first roller through a belt.

[0019] The present invention provides a screw pile pile head cutting device with an autonomous cutting state switching function, having the following beneficial effects:

[0020] First, for the screw pile pile head cutting device with an autonomous cutting state switching function, by setting the positioning mechanism, the device can be connected to the screw pile pile head and can be automatically aligned with the center of the top of the screw pile pile head during operation. Thus, when performing circumferential cutting on the pile head, the device can achieve a perfect circular rotation on the outer surface of the pile head.

[0021] Second, for the screw pile pile head cutting device with an autonomous cutting state switching function, by setting the cutting mechanism, when the diameter of the screw pile pile head is small, the screw pile pile head can be directly cut and severed. At the same time, when the diameter of the screw pile pile head is larger than the diameter of the cutting blade, the circumferential cutting of the screw pile pile head can be achieved.

[0022] Third, for the screw pile pile head cutting device with an autonomous cutting state switching function, by setting the clamping mechanism, when circumferential cutting of the screw pile pile head is required, the outer surface of the screw pile pile head can be clamped, thereby increasing the stability during cutting when the device rotates around the screw pile pile head.

[0023] IV. The screw pile head cutting device with autonomous cutting state switching can extrude the outer surface of the screw pile head by setting an extrusion mechanism. Through the setting of two extrusion mechanisms, the device can be positioned on the outer surface of the screw pile head. By setting a limit frame, the rotating column can be limited, enabling the rotating column to drive the rotating frame to rotate stably. By setting a clamping frame and a clamping plate, when the clamping frame rotates, the clamping plate can be extruded, thereby enabling the rotating frame to rotate. When the clamping frame enters the groove of the clamping plate, the rotation of the rotating frame can be prevented.

[0024] V. The screw pile head cutting device with autonomous cutting state switching can utilize the force generated by the rotation of the first roller through the setting of a transmission mechanism to apply a frictional force to the outer surface of the screw pile head by the device, thereby enabling the device to rotate around the screw pile head and being able to adapt to screw pile heads with different diameters and thicknesses at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the external structure schematic diagram of a screw pile head cutting device with autonomous cutting state switching according to the present invention;

[0026] Figure 2 is the side view of the structure of a screw pile head cutting device with autonomous cutting state switching according to the present invention;

[0027] Figure 3 is the schematic diagram of the positioning mechanism structure according to the present invention;

[0028] Figure 4 is the sectional structure schematic diagram of the positioning mechanism according to the present invention;

[0029] Figure 5 is for the present invention Figure 4 the enlarged schematic diagram of structure A;

[0030] Figure 6 is the schematic diagram of the cutting mechanism structure according to the present invention;

[0031] Figure 7 is the sectional structure schematic diagram of the cutting mechanism according to the present invention;

[0032] Figure 8 is the schematic diagram of the clamping mechanism structure according to the present invention;

[0033] Figure 9 is the schematic diagram of the extrusion mechanism structure according to the present invention;

[0034] Figure 10 is the sectional structure schematic diagram of the extrusion mechanism according to the present invention;

[0035] Figure 11 is the partial structure schematic diagram of the extrusion mechanism according to the present invention;

[0036] Figure 12 Schematic diagram of the structure of the stabilization mechanism of the present invention;

[0037] Figure 13 Schematic diagram of the structure of the transmission mechanism of the present invention;

[0038] Figure 14 Schematic cross-sectional view of the transmission mechanism of the present invention.

[0039] In the figure: 1, housing; 2, support rod; 3, positioning mechanism; 4, fixed box; 5, cutting mechanism; 6, clamping mechanism; 31, connecting block; 32, first rolling bearing; 33, outer shell; 34, positioning frame; 35, pull rod; 36, track groove; 37, first limiting tube; 38, piston rod; 39, clamping plate; 310, moving rod; 311, sealing ring; 312, limiting ring; 313, first rotating ring; 314, bent rod; 315, first internal thread ring; 51, support plate; 52, track frame; 53, first stepping motor; 54, sliding block; 55, second internal thread ring; 56, first reciprocating lead screw; 57, rotating block; 58, rotating sleeve; 59, second stepping motor; 511, second reciprocating lead screw; 512, first roller; 513, second rotating rod; 514, cutting blade; 515, second rolling bearing; 516, first sliding rod; 517, limiting groove; 61, extrusion mechanism; 62, stabilization mechanism; 63, transmission mechanism; 611, limiting frame; 612, rotating column; 613, rotating frame; 614, clamping plate; 615, limiting ball; 616, rotating ring; 617, clamping frame; 618, support frame; 619, connecting frame; 6110, limiting ring; 6111, first pressing plate; 6112, cylinder; 6113, second pressing plate; 6114, first spring; 6115, third rotating rod; 6116, support frame; 6117, protective frame; 6118, ring; 6119, spherical wheel; 621, connecting frame; 622, stabilization box; 623, second limiting tube; 624, second sliding rod; 625, second spring; 626, limiting column; 627, second rotating ring; 628, connecting rod; 629, extrusion cylinder; 631, third limiting tube; 632, third sliding rod; 633, third spring; 634, fixing plate; 635, limiting rod; 636, second roller; 637, handle; 638, belt. Detailed implementation manners

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0041] The first embodiment is as Figures 1-14 shown. The present invention provides a technical solution: a screw pile pile head cutting device with an autonomous cutting state switching function, including a housing 1 and a support rod 2 fixedly connected to the corner of the upper surface of the housing 1.

[0042] A positioning mechanism 3 for positioning the device at the top of the screw pile pile head. By setting the positioning mechanism 3, the device can be connected to the screw pile pile head and can be automatically aligned with the center of the top of the screw pile pile head during operation. Furthermore, when performing circumferential cutting on the pile head, the device can achieve a perfect circular rotation on the outer surface of the pile head, thus;

[0043] A cutting mechanism 5 for performing circumferential cutting on the screw pile pile head. By setting the cutting mechanism 5, when the diameter of the screw pile pile head is small, the screw pile pile head can be directly cut and severed. At the same time, when the diameter of the screw pile pile head is larger than the diameter of the cutting blade, circumferential cutting of the screw pile pile head can be achieved;

[0044] A clamping mechanism 6 for clamping the device on the outer surface of the screw pile pile head and enabling the device to rotate stably on the outer surface of the pile head. By setting the clamping mechanism 6, when circumferential cutting of the screw pile pile head is required, the outer surface of the screw pile pile head can be clamped, thereby increasing the stability during cutting when the device rotates around the screw pile pile head;

[0045] A fixed box 4 is fixedly connected to the inner wall of the housing 1. The positioning mechanism 3 is fixedly connected above the housing 1 through the support rod 2. The cutting mechanism 5 is fixedly connected to the upper surface of the housing 1, and the clamping mechanism 6 is fixedly connected to the outer surface of the housing 1;

[0046] The clamping mechanism 6 includes a pressing mechanism 61, a stabilizing mechanism 62, and a transmission mechanism 63.

[0047] The positioning mechanism 3 includes a connecting block 31. The connecting block 31 is fixedly connected to the top of the support rod 2. A first rolling bearing 32 is fixedly connected to the outer surface of the connecting block 31. An outer shell 33 is fixedly connected to the inner ring of the first rolling bearing 32. A positioning frame 34 is fixedly connected to the inner wall of the outer shell 33. A pull rod 35 is fixedly connected to the upper surface of the positioning frame 34. By providing the first rolling bearing 32, stable rotation can be generated between the connecting block 31 and the outer shell 33, and thus stable rotation can be generated between the housing 1 and the positioning mechanism 3. By providing the pull rod 35, it is convenient for the operator to install the device on the top of the screw pile head. A first limiting tube 37 penetrates through the outer surface of the positioning frame 34. A piston rod 38 is closely slidably arranged in the inner cavity of the first limiting tube 37. A clamping plate 39 is fixedly connected to one end of the piston rod 38 located in the inner cavity of the positioning frame 34. A track groove 36 is formed on the upper surface of the positioning frame 34. A moving rod 310 is fixedly connected to the upper surface of the clamping plate 39. The moving rod 310 is slidably connected to the track groove 36 formed on the upper surface of the positioning frame 34. By providing the first limiting tube 37, the piston rod 38 can be limited, enabling the piston rod 38 to generate stable lateral movement in the inner cavity of the first limiting tube 37. The piston rod 38 is in close contact with the inner wall of the first limiting tube 37. Therefore, when there is air flow in the first limiting tube 37, the piston rod 38 will be extruded. By providing the clamping plate 39, when the piston rod 38 moves under the influence of air pressure, the clamping plate 39 can move towards the outer surface of the screw pile head, and thus, under the action of multiple clamping plates 39, the clamping work on the screw pile head can be completed. By providing the track groove 36 and the moving rod 310, the clamping plate 39 can move stably. A sealing ring 311 is slidably arranged in the inner cavity of the outer shell 33. The sealing ring 311 is sleeved on the outer surface of the positioning frame 34. A limiting ring 312 is fixedly connected to the lower surface of the sealing ring 311. A first rotating ring 313 is rotatably connected to the inner cavity of the limiting ring 312. A bent rod 314 is fixedly connected to the lower surface of the first rotating ring 313. A first internal thread ring 315 is fixedly connected to one end of the bent rod 314 away from the first rotating ring 313. By providing the sealing ring 311, when moving upward, the air between the outer shell 33 and the positioning frame 34 can be extruded, thereby changing the internal air pressure. By providing the first rotating ring 313, stable rotation can be generated in the inner cavity of the limiting ring 312, and thus the bent rod 314 and the first internal thread ring 315 can rotate around the outer shell 33.

[0048] The cutting mechanism 5 includes a support plate 51 which is fixedly connected to the upper surface of the housing 1. The top end of the support plate 51 is fixedly connected with an orbital frame 52. A first stepping motor 53 is slidably connected to the inner cavity of the orbital frame 52. Symmetrically mounted on the outer side surface of the first stepping motor 53 are sliding blocks 54 which are slidably connected to the inner cavity of the orbital frame 52. A second internal thread ring 55 penetrates through the outer surface of the orbital frame 52. Threadedly connected to the inner cavity of the second internal thread ring 55 is a first reciprocating lead screw 56. One end of the first reciprocating lead screw 56 close to the first stepping motor 53 is fixedly connected with a rotating block 57. The outer surface of the rotating block 57 is rotatably connected with a rotating sleeve 58 which is fixedly connected to the outer surface of the first stepping motor 53. By providing the orbital frame 52, the first stepping motor 53 can be limited, enabling the first stepping motor 53 to move stably within its inner cavity, thereby changing the distance between the first stepping motor 53 and the screw pile head. By providing the sliding blocks 54, the stability of the first stepping motor 53 sliding within the inner cavity of the orbital frame 52 can be increased. By providing the second internal thread ring 55, the first reciprocating lead screw 56 can be limited, enabling the first reciprocating lead screw 56 to generate a lateral movement within the inner cavity of the second internal thread ring 55 when rotating, thereby pulling and squeezing the first stepping motor 53 and ultimately changing the position of the first stepping motor 53 within the inner cavity of the orbital frame 52. Fixedly connected to the upper surface of the orbital frame 52 is a second stepping motor 59. The output end of the second stepping motor 59 is installed with a second reciprocating lead screw 511 through a coupling. The second reciprocating lead screw 511 is threadedly connected to the first internal thread ring 315. Fixedly connected to the outer surface of the second reciprocating lead screw 511 is a first roller 512. By providing the second stepping motor 59, the second reciprocating lead screw 511 can be made to rotate slowly during operation. By providing the second reciprocating lead screw 511, when rotating, the first internal thread ring 315 can be made to move up and down on the outer surface of the second reciprocating lead screw 511. A section without threads is provided at the top of the second reciprocating lead screw 511. When the first internal thread ring 315 moves to the section without threads, it will no longer move upward on the outer surface of the second reciprocating lead screw 511 and will only move downward again when the second reciprocating lead screw 511 rotates in reverse. The output end of the first stepping motor 53 is installed with a second rotating rod 513 through a coupling. A cutting blade 514 is provided at the bottom end of the second rotating rod 513. The cutting blade 514 is located within the inner cavity of the fixed box 4. Fixedly connected to the outer surface of the second rotating rod 513 is a second rolling bearing 515. Fixedly connected to the outer surface of the second rolling bearing 515 is a first sliding rod 516. A limit groove 517 is sleeved on the outer surface of the first sliding rod 516. The limit groove 517 is fixedly connected to the inner surface of the fixed box 4. By providing the second rotating rod 513, when the first stepping motor 53 starts to work,The second rotating rod 513 drives the cutting blade 514 to rotate, thereby enabling the cutting blade 514 to cut the screw pile head. By setting the second rolling bearing 515, when the second rotating rod 513 rotates, the first sliding rod 516 will not rotate. By setting the limiting groove 517, the first sliding rod 516 can be limited, enabling the first sliding rod 516 to generate a lateral movement in the inner cavity of the limiting groove 517, and further enabling the first stepping motor 53 to move laterally stably.

[0049] The extrusion mechanism 61 includes a limit frame 611 which is fixedly connected to the outer surface of the housing 1. A rotating column 612 is rotatably connected to the inner cavity of the limit frame 611. A rotating frame 613 is fixedly connected to the outer surface of the rotating column 612. A clamping plate 614 is fixedly connected to the outer side surface of the rotating frame 613. Limit balls 615 are symmetrically and fixedly connected to the end of the rotating column 612. A rotating ring 616 is rotatably connected to the outer surface of the limit ball 615. A clamping frame 617 is fixedly connected to the upper surface of the rotating ring 616. The outer surface of the clamping frame 617 is in extrusion fit with the outer surface of the clamping plate 614. A support frame 618 is fixedly connected to the side of the rotating frame 613 away from the rotating column 612. A connection frame 619 is fixedly connected to the end of the support frame 618. A limit ring 6110 is fixedly connected to the inner wall of the connection frame 619. By providing the extrusion mechanism 61, the outer surface of the screw pile head can be extruded, and by providing two extrusion mechanisms 61, the effect of positioning the device on the outer surface of the screw pile head can be achieved. By providing the limit frame 611, the rotating column 612 can be limited, so that the rotating column 612 drives the rotating frame 613 to rotate stably. By providing the clamping frame 617 and the clamping plate 614, when the clamping frame 617 rotates, the clamping plate 614 can be extruded, so that the rotating frame 613 can rotate, and when the clamping frame 617 enters the groove of the clamping plate 614, the rotation of the rotating frame 613 can be prevented. A cylinder 6112 is rotatably connected to the inner cavity of the limit ring 6110. A first extrusion plate 6111 is fixedly connected to the outer surface of the limit ring 6110. A second extrusion plate 6113 is fixedly connected to the outer surface of the cylinder 6112. A first spring 6114 is fixedly connected to the outer side surface of the second extrusion plate 6113. The end of the first spring 6114 is fixedly connected to the first extrusion plate 6111. A third rotating rod 6115 is fixedly connected to the bottom end of the cylinder 6112. A support frame 6116 is fixedly connected to the outer surface of the third rotating rod 6115. A protection frame 6117 is fixedly connected to the inner wall of the support frame 6116. A ring 6118 is fixedly connected to the inner wall of the support frame 6116. A spherical wheel 6119 is rotatably connected to the inner cavity of the ring 6118. By providing the limit ring 6110, the cylinder 6112 can be limited, so that the cylinder 6112 rotates stably. By providing the first extrusion plate 6111, the second extrusion plate 6113 and the first spring 6114, the cylinder 6112 can always be subjected to an extrusion force, so that the third rotating rod 6115 drives the support frame 6116 to rotate and move towards the outer surface of the screw pile head. By providing the ring 6118, the spherical wheel 6119 can be limited, so that the spherical wheel 6119 rotates stably, and when it contacts and rotates around the screw pile head, the spherical wheel 6119 rolls on the outer surface of the screw pile head.

[0050] The stabilizing mechanism 62 includes a connecting frame 621 which is fixedly connected to the surface of the connecting frame 619. The end of the connecting frame 621 is fixedly connected to a stabilizing box 622. A second limiting tube 623 is fixedly connected to the inner wall of the stabilizing box 622. A second sliding rod 624 is slidably connected to the inner cavity of the second limiting tube 623. A second spring 625 is fixedly connected to the end of the second sliding rod 624. A limiting post 626 is fixedly connected to one end of the second sliding rod 624 located on the outer surface of the second limiting tube 623. A second rotating ring 627 is rotatably connected to the outer surface of the limiting post 626. A connecting rod 628 is fixedly connected to the outer surface of the second rotating ring 627. The end of the connecting rod 628 is fixedly connected to an extrusion cylinder 629. By providing the second limiting tube 623, the second sliding rod 624 can be limited, enabling the second sliding rod 624 to move stably within the inner cavity of the second limiting tube 623. By providing the second spring 625, the second sliding rod 624 can be extruded, so that the second sliding rod 624 is always subjected to an extrusion force towards the outer surface of the screw pile head. By providing the limiting post 626, the second rotating ring 627 can drive the connecting rod 628 and the extrusion cylinder 629 to rotate stably. When the device rotates around the screw pile head, the extrusion cylinder 629 is in close contact with the outer surface of the screw pile head and rotates.

[0051] The transmission mechanism 63 includes a third limiting tube 631 which is fixedly connected to the upper surface of the stabilizing box 622. A third sliding rod 632 is slidably connected to the inner cavity of the third limiting tube 631. A third spring 633 is fixedly connected to the end of the third sliding rod 632. A fixing plate 634 is fixedly connected to the upper surface of the third sliding rod 632. A limiting rod 635 is fixedly connected to the end of the fixing plate 634. A second roller 636 is rotatably connected to the outer surface of the limiting rod 635. A handle 637 is fixedly connected to the top of the limiting rod 635. The second roller 636 is connected to the first roller 512 by a belt 638. By providing the transmission mechanism 63, the force generated by the rotation of the first roller 512 can be utilized to apply a frictional force to the outer surface of the screw pile head, so that the device can rotate around the screw pile head. At the same time, it can adapt to screw pile heads with different diameters and thicknesses. By providing the third limiting tube 631, the third sliding rod 632 can be limited, enabling the third sliding rod 632 to move horizontally within the inner cavity of the third limiting tube 631. By providing the third spring 633, the third sliding rod 632 can be pulled, so that the third sliding rod 632 is always subjected to a pulling force towards the inner wall of the third limiting tube 631. By providing the second roller 636 and the belt 638, when the first roller 512 rotates, the belt 638 also rotates, thereby applying a frictional force to the outer surface of the screw pile head, and finally enabling the device to rotate around the screw pile head.

[0052] Working principle: When in use, the operator pulls the pull rod 35, sleeks the outer shell 33 on the outer surface of the screw pile head, and sleeks a plurality of clamping plates 39 on the outer surface of the screw pile head. Then the operator connects the second stepping motor 59 to the power supply and turns on the switch, so that the second reciprocating lead screw 511 rotates. When the second reciprocating lead screw 511 rotates, the first internal thread ring 315 moves upward. Under extrusion, the sealing ring 311 moves upward in the inner cavities of the outer shell 33 and the positioning frame 34, thereby compressing the internal air. Under the action of pressure, the air enters the interior through the opening of the first limiting tube 37, and then the piston rod 38 moves horizontally, and finally the clamping plates 39 squeeze the outer surface of the screw pile head to achieve the positioning of the screw pile head;

[0053] When the diameter of the screw pile head is small, the operator connects the first stepping motor 53 to the power supply and turns on the switch, so that the second rotating rod 513 drives the cutting blade 514 to rotate. Then the operator rotates the first reciprocating lead screw 56, so that the sliding block 54 on the outer side of the first stepping motor 53 moves horizontally in the inner cavity of the track frame 52, and then the cutting blade 514 cuts the screw pile head;

[0054] When the diameter of the screw pile head is large, the operator repeats the above work until the cutting blade 514 can no longer move. Then the operator rotates the rotating frame 613 and connects the clamping frame 617 with the clamping plate 614. Under the influence of the elastic potential energy of the first spring 6114, the third rotating rod 6115 drives the support frame 6116 to rotate, and makes the spherical wheel 6119 tightly contact with the outer surface of the screw pile head. At the same time, under the action of the second spring 625, the second sliding rod 624 drives the limiting column 626 to move towards the outer surface of the screw pile head, and then the extrusion cylinder 629 contacts the outer surface of the screw pile head. Then the operator pulls the handle 637 and makes the belt 638 contact with the outer surface of the screw pile head. When the first roller 512 rotates, it will drive the belt 638 to rotate, and then generate a frictional force with the outer surface of the screw pile head. The frictional force will drive the device to rotate around the screw pile head, and then the cutting blade 514 performs a circumferential cutting on the screw pile head.

[0055] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A screw pile pile head cutting device with an autonomous switching cutting state, characterized in that, Including: A housing (1), and support rods (2) fixedly connected to the corners of the upper surface of the housing (1); A positioning mechanism (3) for positioning the device at the top of the screw pile head; A cutting mechanism (5) for performing a circumferential cutting operation on the screw pile head; A clamping mechanism (6) for clamping the device on the outer surface of the screw pile head and enabling the device to rotate stably on the outer surface of the pile head; A fixed box (4) is fixedly connected to the inner wall of the housing (1). The positioning mechanism (3) is fixedly connected above the housing (1) through the support rod (2). The cutting mechanism (5) is fixedly connected to the upper surface of the housing (1). The clamping mechanism (6) is fixedly connected to the outer surface of the housing (1); The cutting mechanism (5) includes a support plate (51). The support plate (51) is fixedly connected to the upper surface of the housing (1). The top end of the support plate (51) is fixedly connected with a track frame (52). A second stepping motor (59) is fixedly connected to the upper surface of the track frame (52). The output end of the second stepping motor (59) is installed with a second reciprocating lead screw (511) through a coupling. The second reciprocating lead screw (511) is threadedly connected with a first internal thread ring (315). A first roller (512) is fixedly connected to the outer surface of the second reciprocating lead screw (511); The clamping mechanism (6) includes an extrusion mechanism (61), a stabilizing mechanism (62), and a transmission mechanism (63); The stabilizing mechanism (62) includes a connecting frame (621). The connecting frame (621) is fixedly connected to the surface of the connecting frame (619). The end of the connecting frame (621) is fixedly connected with a stabilizing box (622). A second limiting tube (623) is fixedly connected to the inner wall of the stabilizing box (622). A second sliding rod (624) is slidably connected to the inner cavity of the second limiting tube (623). A second spring (625) is fixedly connected to the end of the second sliding rod (624). A limiting post (626) is fixedly connected to one end of the second sliding rod (624) located on the outer surface of the second limiting tube (623). A second rotating ring (627) is rotatably connected to the outer surface of the limiting post (626). A connecting rod (628) is fixedly connected to the outer surface of the second rotating ring (627). An extrusion cylinder (629) is fixedly connected to the end of the connecting rod (628); The transmission mechanism (63) includes a third limit tube (631). The third limit tube (631) is fixedly connected to the upper surface of the stable box (622). A third sliding rod (632) is slidably connected to the inner cavity of the third limit tube (631). A third spring (633) is fixedly connected to the end of the third sliding rod (632). A fixing plate (634) is fixedly connected to the upper surface of the third sliding rod (632). A limit rod (635) is fixedly connected to the end of the fixing plate (634). A second roller (636) is rotatably connected to the outer surface of the limit rod (635). A grip (637) is fixedly connected to the top of the limit rod (635). The second roller (636) is connected to the first roller (512) by a belt (638).

2. The screw pile pile head cutting device with an autonomous switching cutting state according to claim 1, characterized in that: The positioning mechanism (3) includes a connecting block (31). The connecting block (31) is fixedly connected to the top of the support rod (2). A first rolling bearing (32) is fixedly connected to the outer surface of the connecting block (31). A housing (33) is fixedly connected to the inner ring of the first rolling bearing (32). A positioning frame (34) is fixedly connected to the inner wall of the housing (33). A pull rod (35) is fixedly connected to the upper surface of the positioning frame (34).

3. The screw pile pile head cutting device with an autonomous switching cutting state according to claim 2, characterized in that: A first limit tube (37) penetrates through the outer surface of the positioning frame (34). A piston rod (38) is tightly slidably connected to the inner cavity of the first limit tube (37). A clamping plate (39) is fixedly connected to one end of the piston rod (38) located in the inner cavity of the positioning frame (34). A track groove (36) is formed on the upper surface of the positioning frame (34). A moving rod (310) is fixedly connected to the upper surface of the clamping plate (39). The moving rod (310) is slidably connected to the track groove (36) formed on the upper surface of the positioning frame (34).

4. The screw pile pile head cutting device with an autonomous switching cutting state according to claim 3, characterized in that: A sealing ring (311) is slidably connected to the inner cavity of the housing (33). The sealing ring (311) is sleeved on the outer surface of the positioning frame (34). A limit ring (312) is fixedly connected to the lower surface of the sealing ring (311). A first rotating ring (313) is rotatably connected to the inner cavity of the limit ring (312). A bent rod (314) is fixedly connected to the lower surface of the first rotating ring (313). A first internal thread ring (315) is fixedly connected to one end of the bent rod (314) away from the first rotating ring (313).

5. The screw pile head cutting device with an autonomous switching cutting state according to claim 4, characterized in that: A first stepping motor (53) is slidably connected to the inner cavity of the rail frame (52). Symmetrically mounted on the outer side surface of the first stepping motor (53) are sliding blocks (54), and the sliding blocks (54) are slidably connected to the inner cavity of the rail frame (52). The outer surface of the rail frame (52) penetrates through a second internal thread ring (55), and a first reciprocating lead screw (56) is threadedly connected to the inner cavity of the second internal thread ring (55). One end of the first reciprocating lead screw (56) close to the first stepping motor (53) is fixedly connected to a rotating block (57), and the outer surface of the rotating block (57) is rotatably connected to a rotating sleeve (58), and the rotating sleeve (58) is fixedly connected to the outer surface of the first stepping motor (53).

6. The screw pile pile head cutting device with an independently switchable cutting state according to claim 5, characterized in that: The output end of the first stepping motor (53) is installed with a second rotating rod (513) through a coupling. A cutting blade (514) is provided at the bottom end of the second rotating rod (513), and the cutting blade (514) is located in the inner cavity of the fixed box (4). A second rolling bearing (515) is fixedly connected to the outer surface of the second rotating rod (513), and a first sliding rod (516) is fixedly connected to the outer surface of the second rolling bearing (515). A limiting groove (517) is sleeved on the outer surface of the first sliding rod (516), and the limiting groove (517) is fixedly connected to the inner surface of the fixed box (4).

7. The screw pile pile head cutting device with an autonomous switching cutting state according to claim 6, characterized in that: The extrusion mechanism (61) includes a limiting frame (611), and the limiting frame (611) is fixedly connected to the outer surface of the housing (1). A rotating column (612) is rotatably connected to the inner cavity of the limiting frame (611). A rotating frame (613) is fixedly connected to the outer surface of the rotating column (612). A clamping plate (614) is fixedly connected to the outer side surface of the rotating frame (613). Limiting balls (615) are symmetrically and fixedly connected to the end of the rotating column (612). A rotating ring (616) is rotatably connected to the outer surface of the limiting balls (615). A clamping frame (617) is fixedly connected to the upper surface of the rotating ring (616), and the outer surfaces of the clamping frame (617) and the clamping plate (614) are in extrusion fit. A support frame (618) is fixedly connected to the side of the rotating frame (613) away from the rotating column (612). A connecting frame (619) is fixedly connected to the end of the support frame (618), and a limiting ring (6110) is fixedly connected to the inner wall of the connecting frame (619).

8. A screw pile pile head cutting device with an autonomous switching cutting state according to claim 7, characterized in that: A cylinder (6112) is rotatably connected to the inner cavity of the limit ring (6110). A first extrusion plate (6111) is fixedly connected to the outer surface of the limit ring (6110). A second extrusion plate (6113) is fixedly connected to the outer surface of the cylinder (6112). A first spring (6114) is fixedly connected to the outer side surface of the second extrusion plate (6113). The end of the first spring (6114) is fixedly connected to the first extrusion plate (6111). A third rotating rod (6115) is fixedly connected to the bottom end of the cylinder (6112). A support frame (6116) is fixedly connected to the outer surface of the third rotating rod (6115). A protective frame (6117) is fixedly connected to the inner wall of the support frame (6116). A ring (6118) is fixedly connected to the inner wall of the support frame (6116). A spherical wheel (6119) is rotatably connected to the inner cavity of the ring (6118).

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